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Is there a Level translator from 2.5V to 1.5V for I2C lines?

doner_t
Intellectual 595 points
Other Parts Discussed in Thread: PCA9306

Hello,

I have only I/O in the only 1.5V bank of the FPGA.  But there is an I2C line which is @2.5V.  Is there a Level translator that translates I2C lines from 2.5V to 1.5V? I searched some parts for this task, but I am not sure about them.

Thank you,

  • 0
    TI__Mastermind 49410 points
    Hey Doner,

    Just to be sure we get the right device:
    What is the expected capacitance on the I2C bus?
    What is the maximum clock frequency?

    From a glance, PCA9306 would work if you don't need to buffer the capacitance and are working at 400kHz or lower.

    Thanks,
    -Bobby